<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>图片</title>
</head>
<!-- <script type="text/javascript">
    if(self.location!=top.location){
         top.location=self.location;
    	}
	</script>  -->
<style>
	* {
		padding: 0px;
		margin: 0px;
	}
	.my-div {
		width: 100%;
		height: 100%;
		margin: 20px 20px;
	}
	.my-div img {
		display: block;
		width: 100%;
		height: 100%;
	}
</style>
<body>
	<div class="my-div">
		<img src="${str}"/>
	 </div>
</body>
</html>